Wilhelm Conrad Roentgen - A German physicist ,discovered X-ray, Henri Becquerel - A French physicist, discovered radioactivity, Marie and Pierre Curie - A married couple from Poland, succeeded in detecting radioactivity through ionizing effect, Radioactive decay - A random and spontaneous process where an unstable nucleus emits radioactive radiation until the nucleus becomes more stable, Becquerel (Bq) - S.I unit of radioactivity, Half life - The time taken for the number of undecayed nuclei to be reduced to half of its original number (value), Positive ion (cation) - An atom that loses electrons , Negative ion (anion) - An atom that gains electrons ,

FORM 3 SCIENCE CHAPTER 8 RADIOACTIVITY

打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？